Electrical rosette cut-out.



No. 730,696. PA-TENTED JUNE 9, 1903.

' 0. 1). PLATT. I

ELECTRICAL ROSETTE GUT-OUT.

APPLICATION FILED MAR. 4; 1903.

1V0 MODEL.

W/T/VESSES, INVENTOR' z v CLARENCE .0. PLAT? ZJLJM- I By i v r r 7 01/! No. 730,696. iatented June 9, 1903. I

UNITED STATES PATENT OFFICE.

CLARENCE D. PLATT, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE BRYANT ELECTRIC COMPANY, OF BRIDGEPORT, CONNECTICUT, A COR- PORATION OF CONNECTICUT. p

ELECTRICAL ROSETTE CUT-OUT.

SPECIFICATION formingpart of Letters Patent N0. 730,696, dated June 9, 1903.

' Application filed March 4,1903. Serial no. 146,105, (No modehl T ail whom it may concern. In the concealed form of rosette (illustrated Be it known that I, CLARENCE D. PLATT, a in Figs. 6 and 7) the connecting-plates B B citizen of the United States of America, residon the base are similarly formed from simple ing in Bridgeport, in the county of Fairfield, fiat strips of metal of suitable thickness and Connecticut, have invented an Electrical Rouniform width, but having to be contained sette Cut-Out, of which the following is a within the chambers of the base the ends for specification. the binding-postsb are toward the center of The main object of my invention is to so the base, While the connecting ends b are construct an electrical rosette cut-out as to bent back also toward the center of the rol0 secure economy of manufacture and to insette. These connecting ends have on their sure good mechanical and electrical connecinner or contact faces notches the same as tions when the cap and base are fitted to the notchesocinthe contact-plates B. It will gether. be seen that in both styles of base, Figs. 2

In the accompanying drawings, Figure lis and 7, the plates B and B are secured in ra- 5 a sectional View of a cleat form of rosette ems dial positions with reference to the center of bodying myinvention. Fig. 2 is a face View the base and the notches 0c in these plates of the base of the same. Fig. '3 is an inner are radial also. face view of the cap detached. Fig. 4 is an Referring now to the cap C, (shown in Figs. edge View of the cap detached. Fig. 5 is a 1, 3, 4, and 5,) c is the central opening for 20 perspective View of the contacts drawn to an the introduction of the conducting-wires the enlarged scale. Fig. 6 is a sectional view of ends of which are to be electrically connected a base of the concealed type in whichmyine to the plates Fin recesses f in the inner face vent-ion may be embodied, and Fig. 7is aface 0f the cap. Fusewires f, lying in protectview of the same. ing-grooves 0, connect these plates in turn 25 The same construction of cap may be used with the plates H, which are to engage with with difierent styles of base,that is,the cleat, the connecting-plates B B on the base. Each concealed, or molding-style. The bodies of of these plates H is a straight fiat strip of the base and cap are formed of porcelain or metal of suitable thickness and uniform other suitable insulating material. width, so that, like the plates B B and the 30 Referring to the cleatstyle of base, (shown plates F, it may conveniently be cut'front a in Figs. 1 and 2,) the hollowed-out interior of flat brass rod. These plates H are secured to the baseis separatedintotwo chambersAand the cap by screws h-in the radial position A by an irregularly-shaped partition wall a shown in Fig. 3. In connection with these with a central projecting part a. w The conradial plates H, I provide elastic-spring con- 35 tact and connecting plates B Bare secured tact-plates H, which are clamped between to the base by screws 1), as usual, in sucha way the plates H and the insulating-body of the that the outer ends of these plates carrying cap. These spring-plates H are in general of the binding-screws b for the wires project the same Width and length as the plates H; out beyond the cap, while the inner ends of but at the outer end and on the advance side 40 the plates project into the corresponding each plate H has a wing h, which is pressed 9c chambers A A to make connection with the up to form a longitudinal rib y, Fig. 5, on its metallic parts on the cap. It will be observed contact-face. This rib is in such a position that each of these connecting-plates B B is that when the cap C is fitted to the base and made from a simple flat strip ofbrass of suitturned partially around, as usual, the spring- 45 able thickness and uniform width pressed up plates H will contact with and slide laterally 5 into the desired shape, which is most clearly over the inner faces of the connecting-plates shown in Fig. 5. An important feature is B B until the rib y drops into the notch 66, that a longitudinal notch x is pressed into its Fig. 5, thus insuring a correct and secure meinner contact-face for a purpose explained chanical fastening and at the same time aper- 5o hereinafter. fect electrical connection. IOO

As shown in Figs. 3 and 4 and partially in Fig. 5 also, the projecting ends of the radial plates H and H lie over recesses C in the outer edges of the inner face of the cap, these recesses receiving the connecting ends of the plates B B and aiding in fitting the cap to the base. The ends of the recesses C in the cap form stops for the corresponding radial plates B B on the base when the cap is put on and turned to position.

I claim as my invention- 1. A rosette cut-out, having a circular base with radial connecting plates of uniform width thronghout in combination with a circular cap having fiat radial plates and elastic. contact plates clamped between said flat plates and the body of the cap making contact with the plates onthe base.

2. A rosette cut-out, provided with a base having connecting-plates with radial notches on their inner contact-faces in combination with a cap having radial connecting-plates with elastic contact-plates having ribs to engazze said notches, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CLARENCE D. PLATT.

WVitnesses:

H. G. WALES, G. W. GOODRIDGE. 

